The MMA was enacted into U.S. law on October 11, 2018, heralding the most significant changes to U.S. music licensing this century. It updates the copyright law to make statutory licensing more efficient for DSPs and to make royalty accounting to copyright owners more accurate and transparent. The MMA created the blanket mechanical license defined in 17 U.S.C. § 115(a) (the “Blanket License”). More information can be found here.
Full details on the MMA can be found here.